Respostas

2014-02-06T18:40:19-02:00
[x²y-¹.(xy-²)^4.(x-¹)-²]: [x^-4.x.x³.y-¹.x-³.y²]
x².x^4.x-².y-¹.y^-8]:[x^-4.x^4.x-³.y-¹.y²]
x^4.y^-9]:[x-³.y¹]
x.y^-8
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